Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/38—Connections for building structures in general
  • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
  • E04B1/4114—Elements with sockets
  • E04B1/4128—Elements with sockets receiving adjustable or removal nuts
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/38—Connections for building structures in general
  • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry

Definitions

• the invention relates to an assembly comprising a component, for example a structural bearing or a steel support, and an anchoring plate which can be at least partially embedded in a concrete component for fastening the component to a concrete component.
• the anchor plate has at least one anchoring element which can be embedded in the concrete component for transmitting transverse forces and is connected to the component with at least one screw connection, wherein the screw connection has at least one screw and one nut with a protective cap.
• an assembly is understood here a multi-part arrangement, which is composed inter alia of the anchor plate and a corresponding cooperating with the anchor plate component.
• a component may be formed for example by a structural bearing, a steel prop or by column feet.
• a structural warehouse is used for the defined and, as far as possible, restraint-free storage of individual concrete components in structures of any kind, such as bridges, girders, houses, towers or parts thereof.
• an anchor plate which produces at least one anchoring element, for example via a head bolt, a composite to the concrete component.
• an anchoring element according to the invention is any element to understand, which is suitable for the transmission of horizontal loads or shear forces in buildings.
• the component is connected to the anchor plate via at least one detachable screw connection. Since the anchor plate is to be at least partially embedded in the concrete component, parts of the screw are in the installed state on the concrete side facing the anchor plate. This is usually the nut of the screw, but may also be a screw head of the screw.
• the protective caps act as anti-rotation lock for the nut of the screw connection.
• the welded-on protective cap prevents turning of the nut as a result of the torque applied during loosening or tightening.
• known caps are shaped much like a socket wrench, so that the mother can not twist in its interior. Co-rotation of the protective cap is prevented by the welded connection with the anchor plate.
• a disadvantage of the known assemblies has been found that deformations and / or forces that out of the component on the Anchor plate act, may be taken not only by the designated at least one anchoring element. Due to the large cross-sectional dimensions of the protective caps, it is conceivable that deformations and / or forces on the protective cap are also introduced into the screw connection. Run these deformations or forces transverse to the axis of the screw, this may be problematic because the screw is usually already loaded as high-strength screw (HV) up to its load limit.
• HV high-strength screw
• Object of the present invention is therefore to show an assembly in which the screw connection between the anchor plate and the building warehouse is not damaged despite the forces present in the component, which is economical to manufacture, has more compact dimensions and the release of the screw even after a long period allows.
• the assembly according to the invention is distinguished from the known from the prior art assemblies in that the cap is designed as attachable to the mother and einbetonierbare in the concrete cap and on the outside has an external anti-rotation and on its inside an internal anti-rotation.
• a torque is applied to the screw head of the screw.
• this holding torque is exerted on the nut with the internal anti-twist protection of the anti-corrosion cap.
• This holding torque in turn is delivered by the corrosion protection cap on the outer rotation on its outer side to the concrete component.
• the outer anti-rotation on the outside of the corrosion protection cap thus causes the corrosion protection cap when loosening or tightening the Screw connection is not rotated relative to the concrete component.
• the inner anti-rotation protection of the corrosion protection cap ensures that the nut is secured against rotation relative to the anti-corrosion cap.
• the protective cap is deliberately adjusted with regard to its deformability such that it consists of a material which is more easily deformable compared to the concrete component and / or is shaped such that it deliberately gives way in the installed state to deformations and / or forces acting transversely to the axis of the screw connection, so that resultant forces are introduced into the at least one anchoring element of the anchor plate instead of into the screw connection.
• the maximum deformability of the corrosion protection cap is limited so that the nut can be tightened again after loosening the screw.
• the deformability of the corrosion protection cap causes a deformation or force acting on the corrosion protection cap to cause no counterforce in the screw connection. Instead, the corrosion protection cap yields, which is why the acting deformation or force can ultimately act on the at least one anchoring element of the anchor plate and is finally derived therefrom.
• the corrosion protection cap yields, which is why the acting deformation or force can ultimately act on the at least one anchoring element of the anchor plate and is finally derived therefrom.
• the corrosion protection cap yields, which is why the acting deformation or force can ultimately act on the at least one anchoring element of the anchor plate and is finally derived therefrom.
• the acting loads on the concrete component are also responsible for deformations or forces within the concrete component and volume changes of the concrete by shrinkage, swelling or creep. Although the deformations resulting from these effects are relatively low, the resulting forces due to the high modulus of elasticity of concrete are correspondingly large.
• the cap of a more easily deformable material such as a material with a lower modulus of elasticity than concrete, can be selectively controlled at which forces the material of the cap deformed.
• the maximum deformability of the protective cap must be limited or their material must not be too easily deformable. This ensures that the protective cap with the help of the inner and outer anti-rotation device can remove the holding torque occurring when loosening and tightening the screw without deforming so that the nut rotates. In other words, it is thus achieved that transverse forces are absorbed mainly in the anchoring element and do not act on the screw connection.
• the thickness of the wall thickness can influence the deformability of the protective cap. With a thick wall thickness, there is more way by deformation of the material to yield a deformation and / or force transverse to the axis of the screw direction, as is the case with a protective cap with a thin wall thickness.
• the cap can also be plugged onto a suitably shaped screw head of a screw. After concreting in the anchor plate and the cap, turning of the screw is prevented when the nut is to be loosened.
• the protective cap protects the screw and / or the nut from contact with concrete. This ensures that the screw remains releasable, and not by entering concrete actually no longer detachable connection.
• the protective cap has an inner lip, wherein the lip keeps the protective cap self-locking, so that the protective cap is secured against detachment.
• a detachment could for example be prevented during transport or during installation of the nut or the screw.
• the protective cap has a lower edge, wherein the lip protrudes on the inside of the lower edge.
• the inner diameter of the lip is smaller than the largest outer diameter of the nut. This avoids that when filling the concrete in the formwork, the protective cap from the nut of the screw apart. As a result, concrete would penetrate into the screw and cause their damage.
• the lip keeps the protective cap in the correct position to ensure a tight fit of the mother by turning.
• the lip is preferably formed so thin that it can flex flexibly. Since the inner diameter of the lip is smaller than the largest outer diameter of the nut, the lip bends when attaching the corrosion protection cap on the mother.
• the lip it is particularly useful if the lip, after the cap is completely attached to the mother, located below the mother, since they can then return to their original shape. In doing so, the lip fits tightly around the screw connection, so that a tight fit of the protective cap on the nut is ensured and the penetration of concrete or corrosive substances over the useful life of the structure is effectively prevented.
• the protective cap consists of an elastically and / or plastically deformable material, preferably a plastic, in particular a thermoplastic.
• an elastically and / or plastically deformable material in contrast to a material with brittle material behavior, ensures that upon the application of a deformation and / or force on the protective cap, it is deformed without cracks forming in the protective cap.
• the mother of the screw located within the cap is still protected from the ingress of moisture or corrosion-promoting substances, even if the protective cap has already deformed.
• plastic for the production of the cap also offers a wide range of materials that are more or less easily deformed compared to the concrete component. As a result, the ratio between the force required for the deformation of the protective cap and the holding torque required for loosening and tightening the screw connection can be adjusted to each other.
• thermoplastic material offers the possibility to economically produce protective caps in a variety of forms.
• an assembly as external rotation of the cap on at least one projection or the like for positive retention in the concrete Preferably, an assembly as external rotation of the cap on at least one projection or the like for positive retention in the concrete.
• the term "Vorsprung” should not be interpreted too narrowly here.
• the liquid concrete encloses in this case also attached to the outside of the cap rotation with a projection, so that the plugged onto the mother of at least one screw cap after curing of the concrete is positively connected to the concrete, creating a rotation of the cap relative to the concrete component is simply and effectively prevented.
• the assembly is between the plugged on the mother cap and the mother a game available.
• This play makes it possible for the protective cap to give way deliberately as a result of the deformation and / or force acting transversely to the axis of the screw connection and thus the at least one screw connection is decoupled from the acting deformations and / or forces in a particularly effective manner.
• the assembly as an internal anti-rotation at least one counter-element, which is after the attachment of the protective cap on the mother, at least partially in contact with a side surface of the nut.
• the counter-element is a structure on the surface inside the protective cap, which protrudes after fitting, the corrosion protection cap on the nut in the direction of the axis of the nut and produces a positive or frictional connection with the nut or a side surface of the nut.
• the counter element can be for example a mating surface, a web, a rib or another suitable contour.
• the inner anti-rotation when using a hex nut as a nut, the inner anti-rotation preferably have counter-elements in the protective cap, that after attaching the cap on the hex nut preferably every second hexagonal surface of the hex nut at least partially in contact with a the counter surfaces is.
• the protective cap is preferably made of a material that is more easily deformable than concrete, unilateral punctiform loads lead to force peaks and, as a result, to deformation of the material of the protective cap. This effect can also occur if, when loosening or tightening the screw, the holding torque is transmitted from the cap through the contact of the mating surface with a side surface only on one side to the mother.
• the cap has a plurality of evenly distributed on its inside counter-elements. Prefers they are evenly in contact with one of the side surfaces of the nut.
• a protective cap with three mating surfaces use. Accordingly, for example, when using square nuts a protective cap with two mating surfaces can be used. This ensures that the holding torque is transmitted evenly from the cap to the mother.
• a plurality of arranged on the inside of the cap counter-elements are arranged, which can be brought into engagement with the nut or one or more side surfaces of the nut, so that a further rotation is effectively prevented.
• a plurality of webs or ribs may be provided, whereby the placement of the protective cap is facilitated on the mother.
• such an arrangement has the advantage that the existing between the cap and the mother game evenly distributed over the side surfaces of the mother, the uniform distribution of the game is mainly achieved by the lip. Accordingly, the protective cap of the assembly according to the invention from different directions transverse to the axis of the screw can deformations and / or forces evenly yield.
• the protective cap in the region of the at least one counter element has a free inner diameter that is smaller than the largest outer diameter of the nut, and larger than the smallest outer diameter of the nut.
• the smallest inner diameter is formed by the distance from two opposite side surfaces of the hexagon, the largest outer diameter corresponds to the distance between two opposite edges of the hexagon.
• the free inner diameter of the corrosion protection cap corresponds to the diameter of the circle that touches the inside or the at least one counter element inside the cap.
• the free inner diameter corresponds to the size with the dimensions of a hypothetical body in the interior of the cap can just just rotate without the rotation of the body is obstructed by the rotation of the cap.
• the measure of the free inner diameter exceeds the dimensions of the largest outer diameter of the nut, this will cause the nut to spin when loosening or tightening the screw connection. Since in a play-free mounting of the nut through the cap, the maximum transferable holding torque is greatest, and in a large game, the ability to yield transverse to the axis of the screw deformations or forces is greatest, these characteristics of the cap over a variation of the free Inside diameter are particularly easy to be influenced.
• the protective cap has a tilt lock for the nut. If the replacement of the structural bearing is required in a building, this can be removed from the structure by the screw connection is released, which connects the building bearing with the anchor plate. When installing the new building bearing, it may happen that the nut located in the cap tilts from the screw axis on the side. As a result, the screw of the screw connection can no longer be screwed into the screw hole and the thread. Since the mother together with the protective cap and the anchor plate in the concrete of the structure is inaccessible concreted, the mother of the screw can be achieved only by free-standing of the concrete and raised again. Since this is to be avoided, the assembly according to the invention has a tilt protection in its protective cap.
• the protective cap is filled with a corrosion inhibitor in such a way that after the protective cap has been fitted onto the nut, the free surfaces of the nut are wetted with the anticorrosive agent.
• a corrosion inhibitor in particular, grease and other substances which prevent ingress of moisture and corrosive substances to the screw connection are suitable as corrosion protection agents.
• the corrosion protection agents cause the screw connection to be easily detached even after the service life of the component has been reached.
• FIG. 1 shows a section through a first embodiment of an assembly according to the invention.
• FIG. 2 shows a detail of the assembly shown in FIG. 1;
• FIG. 3 is a perspective view of a protective cap of the assembly shown in FIGS. 1 and 2;
• FIG. 4 shows a longitudinal section through the protective cap of the assembly shown in FIG. 3 along the section line A-A;
• FIG. 5 shows a cross section of the protective cap of the assembly shown in FIG. 3 and FIG. 4 along the section line B-B;
• Fig. 6 is a plan view of a nut of the screw connection used in the assembly shown in Fig. 1;
• FIG. 7 shows a section through the protective cap shown in Figure 3, wherein the protective cap is attached to a nut ..;
• Fig. 8 is a section as in Figure 7, wherein the protective cap is placed on a nut.
• FIG. 9 alternative embodiments of the counter-elements of the protective cap.
• the same names are used for the same parts.
• the assembly 1 shows an embodiment of an assembly 1 according to the invention with a component 2.
• the assembly 1 is in this embodiment, a bearing assembly 1.
• This has two anchor plates 4, each connected by two screw 6 with the executed in this embodiment as a structural bearing 2 component are.
• four anchoring elements 5 in the form of head bolts 5 can be seen.
• the screw connections 6 each consist of a screw 7 and a nut 8.
• the lower anchor plate 4 is cast in a concrete component 3.
• the four head bolts 5 establish the bond between the concrete component 3 and the anchor plate 4.
• Each of the two nuts 8 shown the screw 6 between the lower anchor plate 4 and the structural bearing 2 are protected by a designed as a corrosion protection cap 9 protective cap against contact with the concrete of the concrete component 3. It can also be seen that the two nuts 8 of the screw 6 are located after the anchoring of the anchor plate 4 in the concrete of the concrete component 3 below the anchor plate 4 and are not accessible accordingly.
• the upper of the two anchor plates 4 shown in Fig. 1 is shown in a state before the anchor plate 4 is embedded in a concrete member 3.
• no corrosion protection caps 9 are attached to the two nuts 8 of the screw 6.
• the lower anchor plate 4 is shown, which is connected to the structural bearing 2 via a screw connection 6.
• the screw 6 consists of a screw 7 and a nut 8.
• a corrosion protection cap 9 is attached on the nut 8.
• the corrosion protection cap 9 protects the screw 6 during concreting of the concrete component 3 from contamination with concrete.
• the corrosion protection cap 9 has at its lower edge 23 on a lip 24, which below the nut 8 includes the screw 6 and so holds the corrosion protection cap 9 on the screw in position. Next seals the lip 24, the screw 6 against the ingress of corrosive substances.
• the corrosion protection cap 9 has an external anti-rotation device 1 1, which is in positive contact with the concrete of the concrete component and prevents the corrosion protection cap after hardening of the concrete.
• FIG. 3 shows a perspective view of the corrosion protection cap 9.
• four projections 17 of the outer anti-rotation device 1 1 are shown, which prevent the corrosion protection cap in the concrete after setting in concrete.
• the corrosion protection cap 9 it can be seen on the inner side 12 of the anticorrosive cap that it has a counter element in the form of a mating surface 18 of the inner anti-rotation 13.
• the corrosion protection cap 9 also has a lip 24.
• FIG. 4 shows a side view with a partially cutaway illustration of the corrosion protection cap 9 shown in FIG. 3.
• the cut follows the section line A-A as shown in Fig. 5 is drawn.
• two projections 17 of the outer anti-rotation device 1 1 can be seen on the outside 10.
• the longitudinal section through the corrosion protection cap 9 shows on the inner side 12 a lip 24 arranged at the lower edge 23 of the corrosion protection cap 9. This lip is designed as a narrow nose, so that the lip can be pushed away resiliently to the rear.
• the projection 17 of the outer anti-rotation 11 is designed as a reinforcement of the wall 27. This is also true for the formation of the counter surface 18 on the inside 12. It can be seen that the mating surface 18 merges materially into the projection 17 of the outer anti-rotation device 1 1 as reinforced formation of the wall 27.
• FIG. 5 shows a section of the corrosion protection cap 9 along the section line BB shown in FIG. 4. It can be seen here that the corrosion protection cap 9 has six projections 17 as external anti-rotation 11. Furthermore, the shown has Corrosion protection cap 9 via three formed as counter-surfaces 18 counter elements as inner anti-rotation 13, which are arranged uniformly on the inside 12 of the corrosion protection cap 9. It can be seen that each of the counter surface 18 arranged on the inner side 12 faces a projection 17 of the outer anti-rotation lock on the outer side 10. Next, the free inner diameter 20 is located, so the theoretical diameter of a complete rotation within the protective cap 9 allows.
• Fig. 6 shows a nut 8 in the embodiment of a hex nut.
• This hex nut has on its outer side six side surfaces 19, which each form an edge 26 at their cutting lines.
• a threaded screw hole 26 In the center of the nut 8 is a threaded screw hole 26.
• the illustration of the nut shown in Fig. 6 also illustrates that the largest outer diameter 21 of the nut 8 is greater than the smallest outer diameter 22 of the nut 8.
• the smallest outer diameter 22 is the distance from two opposite side surfaces to each other, whereas the largest outer diameter 21st the distance from two opposite edges 26 is.
• Fig. 7 shows a cross section of the corrosion protection cap 9, as it is already shown in Fig. 5, but with the corrosion protection cap 9 is mounted on a nut 8.
• the illustrated embodiment of the nut 8 corresponds to a hexagonal nut, as shown in Fig. 6.
• a game 16 is present between the counter surface 18 and the side surface 19.
• This clearance makes it possible for the corrosion protection cap 9 to yield to the corrosion protection cap of the deformation or force 15 when a deformation or force 15 acts transversely to the screw axis 14.
• the cross section of the corrosion protection cap 9 shown in FIG. 8 corresponds to the cross section shown in FIG. 7.
• a state is shown in which a moment M is exerted for loosening or tightening the screw 6.
• torque M the nut 8 in the corrosion protection cap 9 is slightly rotated until every other one of the six edges 26 is in contact with one of the three mating surfaces 18 of the inner anti-rotation device 13.
• a rotation of the corrosion protection cap 9 is prevented by the at the six projections 17 of the outer anti-rotation device 1 1 uniformly engaging holding torque HM.
• Fig. 9 three further alternative embodiments for counter-elements are shown. All three figures have in common that the nut 8 is shown in dashed lines.
• the counter elements 18a are designed in the form of webs or ribs, wherein the side surface 19 bears against two webs 18a in each case.
• the middle figure also shows counter-elements in the form of webs or ribs 18b, wherein these webs 18b have a trapezoidal outer contour.
• a third alternative for counter-elements is shown. In this alternative, the counter-elements are in the form of teeth 18c.
• the corrosion protection cap 9 can be placed well on the nut 8, since the corrosion protection cap 9 only slightly against the nut 8 must be rotated.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Joining Of Building Structures In Genera (AREA)
• Bridges Or Land Bridges (AREA)
• Building Environments (AREA)

Priority Applications (4)

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Publications (1)

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ID=54012193

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Citations (5)

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• 2014
  • 2014-09-10 DE DE102014218139.9A patent/DE102014218139A1/de not_active Withdrawn
• 2015
  • 2015-08-26 RU RU2017108610A patent/RU2679016C2/ru active
  • 2015-08-26 CN CN201580048813.0A patent/CN107002402B/zh active Active
  • 2015-08-26 UA UAA201702065A patent/UA118601C2/uk unknown
  • 2015-08-26 EP EP15756617.5A patent/EP3191655B1/de active Active
  • 2015-08-26 BR BR112017004785-3A patent/BR112017004785B1/pt active IP Right Grant
  • 2015-08-26 WO PCT/EP2015/069488 patent/WO2016037849A1/de active Application Filing

Patent Citations (5)

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